【正文】 1 章 緒論 ....................................................................................................... 1 課題背景及研究的目的和意義 ......................................................... 1 國內(nèi)外研究現(xiàn)狀 ................................................................................. 1 主要研究內(nèi)容及本次設(shè)計的重點(diǎn) ..................................................... 4 主要研 究內(nèi)容 ......................................................................... 4 設(shè)計的重點(diǎn) ............................................................................. 4 第 2 章 機(jī)床主要結(jié)構(gòu)方案選型及設(shè)計 ........................................................... 5 引言 ..................................................................................................... 5 機(jī)床的的設(shè)計參數(shù)以及設(shè)計方案 ..................................................... 5 五軸銑頭結(jié) 構(gòu)方案分析與比較 ......................................................... 5 銑頭結(jié)構(gòu)分類 ............................................................................ 5 銑頭結(jié)構(gòu)選型 ......................................................................... 6 五軸聯(lián)動銑床整體結(jié)構(gòu)方案分析與比較 ....................................... 10 本章小結(jié) ........................................................................................... 10 第 3 章 伺服進(jìn)給系統(tǒng)機(jī)械傳動結(jié)構(gòu)的設(shè)計 ..................................................11 引言 ....................................................................................................11 伺服進(jìn)給系統(tǒng)機(jī)械傳動結(jié)構(gòu)設(shè)計的一般要求 ................................11 滾珠絲杠螺母副的原理及支撐方式 ............................................... 12 滾珠絲杠螺母副的原理及特點(diǎn) ........................................... 12 滾 珠絲杠螺母副的預(yù)緊 ....................................................... 13 滾珠絲杠的選型與計算 ................................................................... 14 伺服電機(jī)的選型與計算 ................................................................... 14 位移傳感器的選取 ........................................................................... 18 本章小結(jié) ........................................................................................... 19 第 4 章 五軸聯(lián)動銑頭結(jié)構(gòu)的設(shè)計 ................................................................. 20 哈爾濱工業(yè)大學(xué)本科畢業(yè)設(shè)計（論文） VI 引言 ................................................................................................... 20 五軸聯(lián)動銑頭設(shè)計參數(shù) ................................................................... 20 五軸聯(lián)動銑頭的動作實(shí)現(xiàn) ............................................................... 20 蝸桿蝸輪副的設(shè)計與計算 ............................................................... 21 蝸桿蝸輪傳動 的優(yōu)點(diǎn) ............................................................. 21 蝸桿蝸輪傳動的幾何計算步驟 ........................................... 22 本章小結(jié) ........................................................................................... 24 第 5 章 機(jī)床的運(yùn)動仿真及其有限元分析 ..................................................... 25 引言 ................................................................................................... 25 機(jī)床的三維實(shí)體建模及仿真 ......................................................... 25 Solidworks 軟件簡介 ........................................................... 25 機(jī)床的三維模型的建立 ....................................................... 26 五軸聯(lián)動銑頭的運(yùn)動仿真 ................................................... 27 重要零部件的有限元分析 — 靜態(tài)分析 ........................................... 28 有限元分析軟件簡介 ........................................................... 28 COSMOS 與 ANSYS Workbench 分析結(jié)果比較 .............. 29 主要部件的有限元分析 ....................................................... 31 工作臺的靜態(tài)分析 ................................................... 31 龍 門立柱的靜態(tài)分析 ............................................... 33 機(jī)床的有限元分析 — 模態(tài)分析及結(jié)構(gòu)優(yōu)化 ................................... 35 模態(tài)分析基本理論 ............................................................... 35 機(jī)床立柱的 模態(tài)分析與結(jié)構(gòu)優(yōu)化 ....................................... 36 本章總結(jié) ........................................................................................... 40 結(jié) 論 ................................................................................................................. 41 致 謝 ................................................................................................................. 42 哈爾濱工業(yè)大學(xué)本科畢業(yè)設(shè)計（論文） 1 第 1 章 緒論 課題 背景及研究的目的和意義 上個世紀(jì)以來隨著數(shù)控技術(shù)的發(fā)展、可靠性的提高和價格的下降，多軸聯(lián)動機(jī)床的技術(shù)、品種和功能價格比有很大的提高。 哈爾濱工業(yè)大學(xué)本科畢業(yè)設(shè)計（論文） III The design and optimization of five— axis lingkage precision milling machine structure Abstract Machine tool CNC machine is the equipment manufacturing industry, is toensure the realization of the strategic equipment spanning development in china. With the development of new technology change rapidly, high precision, highspeed, high flexibility and low loss has bee the main direction of the development of CNC machine tools. Therefore, the structure and theory of high speed multi axis machine tools, better play the performance of high speed multi axis machine tool and improve machine efficiency has bee the issue of mon concern. The design is based on the reference to large amounts of data at home and abroad, through the parison and analysis of eventually determine the design using five axes linkage Longmen type milling machine. The main application of 3D modeling and the General Assembly on the main ponents of the machine tool for 3D Solidworks software, and the five axis milling head of the motion simulation analysis and the animation demonstration of the use of Solidworks in COSMOSMotion and Animator plug— ins, to modify the structure model of machine tool parameters and moving interference inspection, driving entity model updating, to achieve the goal of optimal design of structures. Finally, plete the finite element machine structure analysis and vibration analysis using the COSMOSWorks software, static